Tweezer



S. SEGAL Jan. 15, 1935.

TWEEZER Filed Dec. 2, 1951 m. M m m A TTORNEY.

personal toilet g UNITED.- sTArEs- PATENT.: oFF1cE Application ncm'br'ue, 1931,seria1 No. 5715.525l

zooming A(01.128--354i'-g 'f The'.present invention relates to gripping. and extractingy instruments, iand, althoughy not lim. ited thereto, it particularly relates to small manually-actuated instruments utilized vfor the. and usually designated ias,

tweezers.v Among the` objectsof` thepriesen't invention'l are to provide devices, or instruments `of.the character describedv which may be 'conveniently manipulated bythe Vhandwithout dangerof pinchingfthe iiesh; 'which include few constit-v uentk parts and are susceptible to inexpensive manufacture and easy -assembly; and which without injury thereto may be readilyV dis-l 'j mantled, quickly repaired and easily reassembled.

by pivoted links, vand in 'slots in the cylindrical guide by elongated recessedfknobs, area pair of wings to be gripped bythe hand in actuatingthe device. Within the cylindrical guide is positioned a spring having a retainerwhich retainerl fitsinlthe recesses of the elongated knobs and locks them in position. I

J A In` the accompanying drawing in which` there is shown one ofwthe variouspossible embodiments: f Fig. l'shows a sideview partly in section` of the expanded device, Fig. 2 shows a side View of the devicevwhen collapsed, i Fig. 3VV is a transverse section upon the line 3--3 of Fig. 1, Y Fig. 4 is a transverse vsection upon the line 4-4 of Fig. 2; and l f Fig. 5i shows the inside faces of the pivotal ends of the tweezer jaws.

Fig. 6 illustrates three views of an upperpor tion of the side wings of the tweezerlf j y 'The tweezer instrument, as shown, is provided with va pairof elongated semi-cylindrical jaws 1 10 andy 11, one end of which terminate-'in grip--I ping faces 12 and 13, preferably corru'gatedand' e 60? 22-v of -thejaw 11. The 'sides 18k offthe chan`nell11'7v prcject beyond th face 50km form shoulder 19` whichgcooperates (with the shoulder formed by. the depression -2-1'igabove the face 51. `.'Ihebotvindicated atfl, and5.=isf;provided with anintegral knob i9y having ajcentral opening or. bore50'.

Retained inthe sleeve` -16 between the -cylinder 526l and the cylindrical endr portion 23 ofvl thejawll.-

is a coil spring27 for'normallyl pressing the jaws' f forwardly :g and keeping` the I instrument. in pandedaposition as,'shown`f'inFig. 1; f

The' upper. endfoi .the sleeve 16 issquareda't 28, and is providedwith two symmetrical trans'-v versechannels or grooves 29, whichserve as'fulcrums forffandlreceive the elongated inwardprojections 30Yof1the wings 31. The projections 30 Y are centrally recessed at 32. The recesses=`32 partly encircle the' springl retainer `orrzylinder'i'ZG. The `retainer V26 locks the wings" 31 in position in the grooves .29 and prevents transversefslipl'- page ofthe projections 30 from the sq'uaredipor# rtion 428` of thefsleeve 16. .The overh'anging lips or edges 33 of .the grooves Y29'cooperate*withvtlie transversely disposed grooves 34 on theupper portion of i; the projections 30 whereby "the upper portions of the arms or wingsy 3.1 are retainedin the grooves or'sockets29` and lateral slippage of the projections SOispreVented. "i

The outer `faces. of the wings liareldesirably l embellished or decorated; asis also'th'e outside of the guide' 16,,andthe lower outerportions735 of said wings. are suitably'flattened and ridged to form nger; grips in' any suitable manner.

. `The .inner faces of. the wings 31 and thek outer facesiof the-jaws "10 andll are provided-with' ears-36 and 37 respc-ictive'ly.v in 'which *(see" also Fig. 4) are press-ttedthe .pivot pins 38,7-.the ends 39 of` which'are of reduced diameter and receive the. sides of the U-shaped channel links L10-the channel portion facing. downwardl'yand forwardly. The upper face 41 'of 'the link 40 upon collapsing `ofthe instrumentl `is stoppedby. the extension 42 of the ears36 (seef'Fig. 2).` vIn expanded positionI the extensionll'l ofthe links' 40 will. be stopped by thesears. 37' asshown in Fig.. :1. *,"Invv assembly thegsides of the'fchannel link 40 may be .pressed into the. reduced en'dsf39k ofthe'pivot.pins138.:H f

"Both .inthe expanded position of *Figijland* contracted, positionl of Fig. 2`there is: no possil bilityof .injuring by. pinching the hander flesh in operating the tweeaer. `Heretoforethev link' members werereversed and had theirchann'els facing; upwardly and; rearwardly., The gap portions-,nowfshownfat 4'?,y in Fig- .2 formerly apr peared between the. `link; 4 0v and. thethumbportion. 35 of. the; wingsl. With thef g soL below the 'grooves 29, whereupon the-p1;oil-lotions'LL 30 of the wings 31 maybe slipped out of the grooves 29. Subsequentlythewings 3-1w'ith the linked jaws 10 and 11 may then be removed@troni-IE the cylindrical guide'16, as may also the spring 27. anditsiretainjer 26. f

-Initial :or reassembly I is accomplished by "5insertingcthe, retainer :26.-:andthe spring 4.27 in' the cylindrical guide `"16 aplaeing the 'jawsilO Iand `11 together '.so. that fthe ridgeg22 willlt linto the channel 17 and the shoulders 19 and 20 fwlllrbon-f should fzbe pressed downwardly :by-a pin for'irod n through'the opening 50 .'to'de'press :the cylindri- 'cal :retainer 26 against the` energy |`of spring I2?? and Vbiinggitvbelow fthe'felevationof the sockets 29. vThe retainer is'heldat.thislelevationwhere- 'upon the vupper A.portions I:of 'the wings `may "be brought upwardly :and 'readily 'zslipped into the sockets-29. Uponzthewremoval v of the mod (not shown) from the opening-50, .the retainer .2`6

releases due-:to f expansion.' offspring. 27 :and L:enters between the .curvedfaces :32 :of fthe:ifismges '.33

` and thusgpivotally locks .the'upperportions :of 35., t

the index :finger of` 4the right Jorflett hand atv substantiallyr any angle. Uponicompressionfthe first` movement will v'bring thelgripping '.jpotions,

12.and .13 `of :the jaws :l0 "and 11 togetherland the `,next movement v'will result :in a :'compression of the spring 2'7 .with an extracting;mov`e ment 'of .thejaws 101fand:11.- In "practicethe gripping andfextracting: operations follow". rapidly, one after .the-other, 'thefingersfcontinuing the fcollapsing :movement `until 'the .flink 40 ."is stopped .by theprojection :42.

' :In the -construction :shown ythe the Acylindrical @guide llvand "the jaws .'lO' and .11 may be .preferably'fdie 'castings'.-While-tthe links 40 :maybe ,made of sheet'metaI, bent sand .'cut to Aform rectangular channel Jimembers. 'Byputilizingavdie castings it is ipossible'to 'form'more accurate extracting grippingffaces-l2 andl13 "on thejaws 10 and fll, which zin `closed position should-admit ofthepassage of a -flnethrea'dzof light-whenfheld uptoa :source of illumination.A The jfpivot pins 38 may be rreadily press-fitted into holes provided f in fthe :ears 36 .and 137. YIt will be `'noted that theconstructioniisaaltogether free ofrivets and .transverse springs.

Asimany changes could vbe made in theabove construction, and'manyrapparentlyzwidely diierp ent "embodimentsjo'f this invention;could be devised without departing from itherscopeitheredf, itis intended that all matter'fnontained Ainthe above description for shown in'dthe accompanying fdrawing 'Shall 'be .interpreted as illustrative andln'otin aflimiting sense.

LIclaimb- .y H l' 1.I'n a device of v the ncharacter -described,:la guide, -a -pair of -jaws sliding vwithinisaldguide, a fpair viofffwings linked to said :aws and having pivotal connections with 's1a`.id=.'guide,andE slida'ble means within said guide to lock said connections in position.

`2. The device of claim 1 in which the guide takes the form of a hollow cylinder with an externally squared'end, which1 endctransverse channelskare'fprovided onwppositessl'desxthereof,

l and the squared end being of vsuch size and shape land the channels being of such depth that their n, lcentral portions will open into the inside of the "cylinden the locking means taking form of a rcylindricalfslide in said cylinder passing through the portions of said wings'disposed in said chaninlSz-v `3. ..'1he;,device of claim l in Which'said pivotal connections include elongated knob-shaped pro- .iections'pA in which fthel guides are provided'iml'th channels to 'receive saidzprojectionsiandiinfwhich the rguide encloses a cylindricallockinganeans,

said :projections Abeing :recessed to [receive said lockingfmeans.

, `4. In a device of` the character describeim.

afgpair A of wlings having pivotal 'eonrections v`with saidnguide, and linkskconnectin'g -'said wingszto saiddawspsaid llinks Ebeing formed of iU-'shaped channel memberspthefopenportions of which face forwardly. l. `'r5.A tweezerincludingaapairof :side wings, a 4pfliirgof ja/ws, ia tube within which the., `inner ends fof'saidy :laws .extend having transverse ex# ternal zchannels: adjacent 'its fclosed rend, .ai 'cylindrical plug` within :said Ytube, fthe, end edges of said wings extending `transversely .tofthe 'bodies' thereof, vfitting in said channels fandv recessed to encirclextheside A:facesy of fsaidiplug.

Y tweezer includingl a *.pair :of jawsiin'cvable into .1 gripping .posit-ion, *a guide for )said Jaws,

means for actuating `vsaid .jaws to l initially Mestablish'fsuch position f and subsequently move .the same @bodily ,rearwardly, .'resilientmea'ns -enclosed iin vfsaid .f guide A f or automatically 'reestablishing saidjaws vto non-cooperating position u1: onsaid-v last-'named means being :released and projecting "stops on -'said actuating means :and

said `jaws and [slidable means .disposed within said guide, andurged byfsaidresilientmeans to lock said actuating means.1" f

.'7..In Aa Vdev-iceg'ofthe :character described, a guide, -La pair of .sjaws i sliding. withintsaid rgu'ide,

a pair of wings linked kto said jaws and havingv contacting faces .of said pairy of.,jawslbeing;pro.

vided atene .end with gripping facesy and atvlthe other end .withcooperatingbosses andldepressions ttingfinto ,eacheotherktdform a pivotal connection. 4. .t

` -9. A tweezer -inclucling a,v mail', y' of, :side wings, a pair of jaws, a tube within which the inner ends Y. ofy -said ja-ws extend fhaving :transverse i external l channels wadjacent :its-.closed end, a A cylin drical plug lwithin :said .,tube, the end e edges .of

said` wingsfex-tending transversely tothe bodies thereof, :fitting -in said channels-and jrecessed torencircle .the side facesy of said plug, the closed and 'of .rsa'id tube. l being'lprovlded with tanfopening to permit of insertion of a tool to move said plug and unlock said wings.

10. In a tweezer, the combination of, a hollow guide having opposed sockets adjacent its upper end, a pair of jaws having their upper portions removably and pivotally associated and arranged within said guide, said jaws having their lower portions extending beyond said guide and including cooperating gripping and extracting faces, wings having ilanges pivotally and removably disposed in said sockets, link means pivotally connected to said jaws and wings, a member within said guide for removably locking said flanges, and a spring within the guide for normally holding said faces apart and said member in locking relation with saidanges.

1l. In a tweezer, the-combination of, a hollow guide having opposed sockets adjacent its upper end, a pair of jaws comprising a pivotal connection, said connection including a boss extending from one of said jaws, the other jaw of said pair having a recess for receiving said boss, said jaws having their upper portions movably disposed in said guide, wings having flanges pivotally mounted in said sockets, link means pivotally connected to said jaws and` wings, a member within the guide for removably locking said flanges, and a spring within the guide for normally holding the lower portions of said jaws apart and said member in locking relation with said flanges.

12. In a tweezer, the combination of,v a guide having opposed sockets, a pair of gripping jaws having their inner portions slidably disposed in said guide, a pair of wings including flanges removably and pivotally mounted in said sockets, links pivotally connected to said jaws and wings, means disposed within said guide for removably locking said flanges and means for normally holding gripping faces of said jaws apart.

13. In a tweezer, the combination of, a hollow guide having opposed sockets adjacent its upper end, a pair of jaws having their upper portions removably and pivotally associated and disposed in said guide, said jaws having their lower portions extending beyond said guide and including cooperating gripping and extracting faces, means' for reciprocating said jaws relative to said guide and means within the latter for removably holding upper correspondingportions of said reciprocating means within lsaid sockets and for normally holding said faces apart.

14. In a tweezer, the combination of, a guide having opposed sockets, a pair of gripping jaws having their upper ends inserted in said guide, a pair of wings having projections pivotally arranged in said sockets, links pivotally connected to said jaws and wings, said jaws having their lower ends provided with grippingv faces, the upper ends of said jaws having a pivotal connection comprising bosses and depressions fitting into each other, displaceable means within the guide for removably locking saidprojections and spring means within the guide for holding said displaceable means in locking relation and said faces normally apart.

15. In a tweezer, the combination of, a guide,

a pair. of jaws their upper ends slidably disposed within said guide,` a pair of wings linked to said jaws and having pivotal connections with said guidaspring means within said guide to normally hold the lower portions of said jaws apart and slidable means within said guide acted upon by said spring means to removably lock said connections. n

16. The tweezer according to claim 15 characterized in that one of said jaws is provided with an extension contacting with said spring means.

17. The tweezer according to claim 15 in which the jaws and wings are provided respectively with ears substantially removed from the ends thereof having protuberances on which said links are pivotally connected, said links having substantially U shaped 4channel sections partly embracing said ears, the open portion` of said U shaped sections facing forwardly.

18. The tweezer according to claim 15 in which said guide is a cylindrical tube having opposed sockets in communication with the bore of said tube, said sockets forming a complementary part of said pivotal connections which include elongated knob shaped projections extending from said wings and receivable in said sockets.

19. The tweezer according to: claim 15 characterized further in that the slidable means is cylindrical and said guide is a cylindrical tube having opposed sockets in communication with the bore of said tube, said socketsforming a complementary part of said pivotal' connections which include knob shaped projections extending from said wings and receivable in said sockets, said projections being recessed to receive said slidable means for removably locking said projections.

20. In a tweezer, the combination of, a guide', a pair of jawshaving their upper ends slidably within said guide, a pair of wings having pivotal connections with said guide, link means pivotally connected to said jaws and wings, a coiled spring to ynormally hold the lower portions of said jaws apart and stop means extending inwardly from said wings and cooperating with said links to limit the retraction of said jaws upon the manipulation of said wings.

SAMUEL SEGAL. 

